콘텐츠 본문
논문 해외 국제전문학술지(SCI급) Suppressing Lithium Dendrite Growth by Metallic Coating on a Separator
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2017-12
- 저자명 Hongkyung Lee, Xiaodi Ren, Chaojiang Niu, Lu Yu, Mark H Engelhard, Inseong Cho, 유명현, Hyun Soo Jin, Hee‐Tak Kim, Jun Liu, Wu Xu, Ji‐Guang Zhang
- 학술지명 Advanced Functional Materials
- 발행처명 wiley
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 12
- 논문 다운로드 링크(외부) https://doi.org/10.1002/adfm.201704391
- 연구분야 공학 > 화학공학
논문 초록 (Abstract)
Lithium (Li) metal is one of the most promising candidates for the anode in high-energy-density batteries. However, Li dendrite growth induces a significant safety concerns in these batteries. Here, a multifunctional separator through coating a thin electronic conductive film on one side of the conventional polymer separator facing the Li anode is proposed for the purpose of Li dendrite suppression and cycling stability improvement. The ultrathin Cu film on one side of the polyethylene support serves as an additional conducting agent to facilitate electrochemical stripping/deposition of Li metal with less accumulation of electrically isolated or “dead” Li. Furthermore, its electrically conductive nature guides the backside plating of Li metal and modulates the Li deposition morphology via dendrite merging. In addition, metallic Cu film coating can also improve thermal stability of the separator and enhance the safety of the batteries. Due to its unique beneficial features, this separator enables stable cycling of Li metal anode with enhanced Coulombic efficiency during extended cycles in Li metal batteries and increases the lifetime of Li metal anode by preventing short-circuit failures even under extensive Li metal deposition.
